51.   And it is, because Unaids estimates are painfully conservative.

52.   And if anything, he said, his estimates are high.

53.   And I think most estimates are above that.

54.   And estimates are available on all but one of the works on view.

55.   And he added that there were so few studies on youth smoking rates and price that any estimate was a guess.

56.   And that estimate may be conservative.

57.   Apparently, that rough estimate is about as precise as the media-relations folks care to get.

58.   As fourth-quarter figures will be restated Thursday, the basis on which the estimates have been made are likely to change, economists said.

59.   Ask whether the estimate is free.

60.   As yet, there is no estimate for moving the highway inland.